What has Turing given to us

ON COMPUTABLE NUMBERS, WITH AN APPLICATION TO THE ENTSCHEIDUNGSPROBLEM

Last time, I men­tioned to have befriended Alan Turing. Who? You might fairly ask. Why? Those who already know him might add. Let me answer those ques­tions. Three years ago (pretty accur­ately), Leon and I were passing by Göttingen. It was our first bike trip, and along the road, we agreed this city was a […]

Size Matters

An American welcoming

Yeah, that’s one thing I learnt in the States. Let’s get through its first week’s les­sons. The pass­port con­trols were noth­ing spe­cial. I mean, I was checked like, one time in Warsaw, three times in Zurich, and noth­ing less than 6 times in Los Angeles (fur­ther on, LA). But all of them were routine. First […]